[Rh(OH)6]3− intercalated Ni–Zn mixed basic salt (Rh/NiZn) acts as an efficient catalyst for the hydrophenylation of internal alkynes with arylboronic acids under mild conditions. The turnover number per Rh site approached 740 in the reaction between 4-octyne and phenylboronic acid. The catalytic monomeric Rh(III) complex is stabilised within the NiZn interlayers, attributable to a strong electrostatic interaction, promoting its re-use.
Bibliographical noteFunding: Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (25420824); Photon Factory (KEK-PF, Proposal no. 2012G596); EPSRC for Leadership Fellowship (EP/G007594/4); and Royal Society for Industry Fellowship.
Hara, T., Fujita, N., Ichikuni, N., Wilson, K., Lee, A. F., & Shimazu, S. (2015). Hydrophenylation of internal alkynes with boronic acids catalysed by a Ni–Zn hydroxy double salt-intercalated anionic rhodium(III) complex. Catalysis Science and Technology, 6(3), 863-868. https://doi.org/10.1039/c5cy01139f